Full-digital design method for synchronously designing tooth pile core and crown by computer

Abstract

The invention provides a full-digital design method for synchronously designing a tooth pile core and a crown by a computer. The method comprises the following steps of: synchronously completing pile path preparation and full-crown abutment tooth preparation for an affected tooth to obtain a silicone rubber impression including the pile path of the affected tooth and the full-crown abutment tooth form; modeling an impression scanning piece; designing a personalized pile core, and cutting and manufacturing a digital pile core by referring to an STL file; changing the gap of the pile core binder to a negative value at the beginning of the pile core design, so that the designed and output new pile core can smoothly penetrate into the digital model of the remaining tooth body, thereby fitting the new pile core and the remaining tooth body into a whole; and designing a full crown to achieve full-digital synchronous design of tooth pile cores and crowns. According to the method, the full crown can be immediately designed on the basis of the digital pile core after the digital pile core is designed by the computer, the pile core, the tooth body and the full crown are tightly combined at the computer level, the defects of an existing digital pile core technology are overcome, and the purposes of optimizing design steps, shortening the pile core and crown repair period of a patient and simplifying the manufacturing process of a technician are achieved.

Description

technical field [0001] The invention relates to an all-digital design method for synchronously designing tooth post cores and crowns by a computer, and belongs to the field of dental prosthesis production. Background technique [0002] Digital methods are currently a hot spot for dental clinicians in the field of oral restoration. They have many advantages: high precision, short processing time, personalization, digitalization, etc., especially the CAD / CAM restoration method, which has been widely used in clinical practice, such as Production of full crowns, veneers, inlays, metal brackets, personalized implants and other restorations. [0003] CAD / CAM post cores have obvious advantages over traditional preformed glass fiber posts + resin cores, such as better root canal adaptability and fracture resistance, and doctors do not need to accumulate resin cores clinically, which reduces the difficulty of operation. Operating time is saved. However, at present, CAD / CAM posts an...

AI Technical Summary

Problems solved by technology

Although this patent realizes the production of digital post and core, there is also the problem that after the digital post and core are designed and manufactured and worn in the mouth, the full crown must be redesigned and manufactured again, that is, the post and core and the full crown are produced in stages: after the pile road is prepared , scan and design and make a digital post and core. After the cutting is completed, put the post and core in the patient's mouth, and then carry out tooth preparation. After re-scanning the tooth, design and make a full crown restoration, and then put the full crown in the patient's mouth. lead to more visits

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